| A | B |
| Sedimentary rocks | rock formed by conpression & cementation of sediments |
| sediments | rock fragments, weathered rock or organic remains |
| clastic | inorganic, land-derived sedimentary rock; fragmental |
| chemical sedimentary rocks | Crystalline rocks from chemical precipitates and evaporites |
| organic sedimentary rocks | Formed from biological origin |
| inorganic sedimentary rocks | formed from land-derived sediments |
| precipitates | chemical/organic rocks formed from solution or suspension |
| evaporites | a sedimentary rock (as gypsum) that originates by evaporation of seawater in an enclosed basin |
| fossil | Any preserved remains or traces of life |